Recently I had a win 10 clean installation on my PC. Now I need to wait for at least 5 seconds before showing any folders in local drives. While opening any folder I can see a message 'working on it'

This Pc is having a 4GB ram and clocked at 2.5 GHZ AMD A series CPU. It has no problem with the previous version of windows and worked fair on windows 8.1.
I had done defragmentation and disk checkup and found no issues associated with the disk.
please help me?

if you are using a direct upgrade system from older versions of winows , Try to perform a clean installation. I recovered from this issue by doing this. I was facing a circling icon when opening my drives. I performed some optimization but never got any results